Theuser should be given a choice to select either TABEL1 orTABEL2 And TABEL3. Thereshould be three options to select the data source. The options are TABEL1 , Individual TABEL1,TABEL2 table, Multiple TABEL1,TABEL2 tables.

There should be acheck box against each option, so that anyone of them can be selected or acombination of them can be selected.When TABEL 1 data source is selected, then there must be an option to sub select two options in TABEL1.